Beisel A.L. (1977). Khetella, a New Gastropod Genus from the Upper Jurassic and Lower Cretaceous of Northern Eurasia. Paleontologicheskiy Zhurnal. No. 1: 146-147. [In Russian].
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Beisel A.L.
1977
Khetella, a New Gastropod Genus from the Upper Jurassic and Lower Cretaceous of Northern Eurasia